Contra Costa County property record for 1003 Rock Harbor Pt, Hercules, CA 94547
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 3,410 sqft · built 2003 |
| Lot Size | 0.165 acres (7,192 sqft) |
| Owner | Trust Name on File |
| Last Sale | $714,500 (Sep 2003) |
| Tax Bill | $15,489 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 404-570-052-5 |
| Primary APN | 404-570-052-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 3,410 sqft Living Area |
| 1st Floor Area | 1,550 sqft |
| 2nd Floor Area | 1,860 sqft |
| Year Built | Built 2003 |
|---|---|
| Effective Year Built | Effective 2003 |
| Architectural Style | Cluster |
| Lot Area | 7,192 sqft (0.165 acres) |
| Garage Type | Attached |
| Garage Area | 679 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 1003 ROCK HARBOR PT |
|---|---|
| City | HERCULES |
| State | CA |
| Zip | 94547-2620 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T8593 L133 |
| Legal Tract | 8593 |
| Legal Lot Number | 133 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1007 |
| Census Tract | 392300 |
1003 Rock Harbor Pt is held in a trust since April 2015.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 1003 ROCK HARBOR PT, HERCULES, CA 94547-2620 |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 24, 2003 · Amount on File |
| Deed Sale | Sep 24, 2003 · Amount on File |
| Deed Document Number | 2003478434 |
| Last Transfer Date | Apr 10, 2015 |
| Transfer Doc | 0000077707 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 1003 Rock Harbor Pt was $15,489.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Hercules City |
| Unified School District | West Contra Costa Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,035,876 (+2%) Land $320,922 Building $714,954 | |
| 2025 | $15,489.00 | $1,015,566 Land $314,630 Building $700,936 |
| 2023 | $14,664.00 (+1.29%) | $976,132 Land $302,413 Building $673,719 |
| 2022 | $14,477.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 1003 Rock Harbor Pt in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 1003 Rock Harbor Pt is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.2% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| Lead | Under 1 ppb (2022–2024) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 349 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Verizon.
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